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  1. Games
  2. Survival Games
  3. Subnautica 2

How to get Strong Acid in Subnautica 2

Guides
By Danielle Rose published 14 May 2026

Strong acid is a requirement for making your Rebreather in Subnautica 2, but it can't be crafted from your fabricator

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Three bottles of Subnautica 2 Strong Acid
(Image credit: Unknown Worlds)
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Strong Acid is one a few Subnautica 2 resources that isn't made in your basic fabricator. While the survival game sequel gives you a little more help than its predecessor ever did, there's also a lot more to Subnautica 2, and you'll find yourself building a base and new machinery far earlier.

One such machine is the Processor, which is required to make strong acid. Mild acid is an early recipe, found in your fabricator, while strong acid is needed to make fiber mesh, an ingredient in the Rebreather blueprint. So once you unlock the Rebreather recipe - or even before - you should look into adding this valuable contraption to your base. Here are the details.

How to make strong acid in Subnautica 2

Strong Acid is produced from a Subnautica 2 Processor

(Image credit: Unknown Worlds)

To make strong acid in Subnautica 2, you first need to build a Processor in your base, and ensure it's powered. Then, you'll need to place two Necrolei Cysts into the Processor to produce one bottle of strong acid.

To make the Rebreather, which is the main early game blueprint that requires the acid, you're going to need two bottles, so be sure to collect four Necrolei Cysts when you find them.

I'll have a separate guide up shortly on locating Necrolei Cysts, as you'll have to tread some dangerous waters to find them, as well as the Rebreather blueprint itself. In the meantime, be sure you know where you find some other tricky resources, including Subnautica 2 silver, Lucifer Rotsacs, and Fibrous Pulp, the latter of which you'll need to combine with strong acid to make fiber mesh.

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Danielle Rose
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After studying Music and Lifestyle journalism and writing a column for a stylish lifestyle magazine in her hometown of Brighton, Danielle finally found her feet writing about videogames for WePC in 2021. She then honed her guides writing skills at PCGamesN between 2022 and 2026, when she took those skills to GamesRadar as a Guides Writer. Danielle's guides are a safe space - she definitely got stuck before you did, which is why she's perfect for the job. When she's not replaying the Silent Hill games or a more up-to-date single-player horror game, you'll find her fighting for her life in Dead by Daylight, tending to a garden in Stardew Valley, or doing both in Minecraft.

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